Hi
I don't regard using these tools as cheating but I do feel that they may limit the range of skills learned. These tools and their counterparts by other manufacturers are, at the end of the day, scrapers - despite what the advertising bumph says they do not replicate the action of gouges, skews etc.
I have no doubt that they are good for doing what a scraper does and the replaceable carbide tips will virtually eliminate trips to the grinder - if that's what you want then you should give it a try, (homemade versions will save you a substantial amouint).
I prefer to use gouges, parting tools and skews over scrapers, so whilst I have some replaceable tip scrapers, they don't actually get that much use.
Regards Mick